CVE-2020-4099
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe application was signed using a key length less than or equal to 1024 bits, making it potentially vulnerable to forged digital signatures. An attacker could forge the same digital signature of the app after maliciously modifying the app.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe application uses code signing with RSA keys of 1024 bits or smaller, which is cryptographically weak and vulnerable to attacks where an attacker could factor the private key and forge valid signatures for modified applications.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 12.0.15CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check installed Hcltech Verse versionLocate the Hcltech Verse installation and identify its version number. This is typically found in the application metadata, about dialog, or installation directory.Affected if The installed version is lower than 12.0.15
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Verify code signing is enabledDetermine whether code signing functionality is actively configured or being used in the Hcltech Verse environment. Check application settings or configuration files related to code signing.Affected if Code signing is enabled and in use with weak RSA keys
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Inspect RSA key size for code signingIf code signing is in use, examine the RSA key pair used for signing applications. Identify the key length in bits. This may require accessing the signing configuration, key store, or certificate details.Affected if The RSA key size is 1024 bits or smaller
A user is affected if Hcltech Verse version is below 12.0.15 AND code signing with RSA keys of 1024 bits or smaller is configured and in use.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped12.0.15
Re-sign the application using a new cryptographic key pair with a minimum length of 2048 bits (preferably 4096 bits), and rotate the old key if there is any suspicion of compromise.
12.0.15 or later
- 1. Check the current installed version of HCL Verse
- 2. Review release notes for version 12.0.15 to understand new features and any configuration changes
- 3. Backup the current HCL Verse installation and associated data
- 4. Download HCL Verse version 12.0.15 or later from the official HCL support portal
- 5. Install the upgrade following HCL's standard upgrade documentation
- 6. Verify the application starts successfully and digital signatures are now using adequate key lengths
- 7. Confirm all functionality works as expected
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,304.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-4099 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-4099 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data